package jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;

public class JDBCDemo3 {
    public static void main(String[] args) {
        try {
            Class.forName("com.mysql.cj.jdbc.Driver");
            Connection connection= DriverManager.getConnection(
                    "jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true",
                    "root",
                    "root");
            System.out.println("连接数据库成功");

            Statement s = connection.createStatement();
            String str ="UPDATE user " +
                        "SET password='199817',nickname='老大',age=27 " +
                        "WHERE id=4";
            int num = s.executeUpdate(str);
            if (num>0){
                System.out.println("修改成功");
            }else {
                System.out.println("修改失败");
            }
            connection.close();
        } catch (Exception e) {
            // 捕获并打印异常信息
            e.printStackTrace();
        }
    }
}
